Prosecutors sought the death penalty, but a jury spared DeVault after her children testified that the victim, Dale Harrell, 34, repeatedly beat her, according to NBC affiliate AZ Central.

But DeVault's testimonies varied, and the jury decided she should serve a life sentence, leaving Judge Roland Steinle to decide whether she would spend the rest of her life behind bars or have the possibility of parole in 25 years, AZ Central reported.

Friday's decision marked the end of the trial, which began in January.

— Elisha Fieldstadt

Tom Tingle / The Arizona Republic via AP

Marissa Devault looks at the jury as they are polled after finding her guilty of first degree murder, in Maricopa County Superior Court, Tuesday, April 8, 2014, in Phoenix.